For parents, noticing changes in a child’s movement or physical abilities can raise many questions and concerns. Understanding the early signs of Duchenne muscular dystrophy (DMD) and knowing when to seek medical advice can help families take the next steps with greater clarity.
This guide provides an overview of what parents should know about DMD and its care.
What Is Duchenne Muscular Dystrophy?
Duchenne muscular dystrophy (DMD) is a genetic condition that causes progressive muscle weakness, primarily affecting boys. It is one of the most common and well-recognised childhood muscular dystrophies.
As a parent, navigating medical terms, therapy schedules, and treatment options can seem daunting. However, care for Duchenne has entered a transformative era where multidisciplinary standard care, proactive rehabilitation, and targeted therapies are significantly extending strength, mobility, and quality of life.
DMD is caused by a change (mutation) in the DMD gene, which is responsible for producing a protein called dystrophin.
Dystrophin is an essential protein that protects muscle cells from damage during contraction. Without functional dystrophin, muscle fibres progressively weaken and are replaced by scar tissue and fat.
DMD primarily affects boys because the DMD gene is located on the X chromosome. However, genetic changes can be present in the family even when there is no previous history of the condition.
When Do Symptoms of DMD Usually Begin?
The first signs usually become noticeable during the early childhood years, between 2–6 years of age.
Parents may notice that their child:
- Has delayed walking
- Takes longer than expected to start running or climbing stairs
- Has difficulty getting up from the floor
- Falls frequently
- Has difficulty keeping up with other children while running or playing
- Walks with a waddling gait
- Walks on the toes
- Has difficulty jumping
- Has noticeably enlarged-looking calf muscles
- Develops weakness that gradually becomes more apparent
One characteristic sign is difficulty getting up from the floor. The child may use their hands to “climb up” their legs in order to stand. This is known as Gowers' sign.
Not every child will have all these features, and the severity and timing can vary.
How Does Duchenne Muscular Dystrophy Progress?
DMD is a progressive condition.
- Muscle weakness starts in the hips and legs, then affects the arms and shoulders.
- By early adolescence, many children need a wheelchair.
- Over time, the heart and breathing muscles can also be affected.
- With modern care, children are living longer and healthier lives than before.
How Is DMD Diagnosed?
Diagnosis involves medical evaluation and appropriate testing.
Creatine Kinase (CK) Levels in Blood
Measuring CK levels in a simple blood sample is an effective initial screen. Elevated CK indicates active muscle cell breakdown.
Genetic Testing
Genetic testing is central to confirming the diagnosis.
Testing can identify disease-causing changes in the DMD gene and is also important for understanding whether a child may be eligible for particular mutation-specific therapies.
Genetic confirmation is also extremely important for genetic counselling and testing of other family members who may be at risk.
Can Duchenne Muscular Dystrophy Be Treated?
Although there is currently no simple cure that completely reverses DMD, there are treatments that can slow disease progression and help maintain muscle function and quality of life.
Treatment is individualised according to the child's age, genetic mutation, stage of disease and overall health.
Standard and Newer Treatment Options
DMD management relies on three core pillars of therapy.
1. Corticosteroids – Baseline Care
Daily corticosteroids like Prednisone and Deflazacort reduce inflammation, prolong walking ability by 2–3 years, and protect heart and lung function.
2. Mutation-Specific Treatments
Some children may be eligible for genetic or mutation-specific therapies like exon skipping, depending on the exact change identified in the DMD gene.
This is one reason why comprehensive genetic testing is so important.
Treatment eligibility depends on the specific mutation and the approved indications and availability of therapies in the relevant country.
The treatment landscape for DMD continues to evolve, with newer genetic and molecular approaches being developed and introduced.
3. Gene Replacement Therapy
Elevidys is an FDA-approved, one-time IV infusion delivering a micro-dystrophin gene directly to muscle cells for ambulatory and non-ambulatory individuals aged 4 and older.
Presently, this is not available in India.
Physical Rehabilitation and Daily Care
Physiotherapy is an essential part of DMD care.
The goal is not to make the child exercise excessively, but to maintain flexibility, prevent contractures, preserve function and support safe mobility.
A physiotherapist experienced in neuromuscular disorders can guide families regarding:
- Gentle stretching
- Maintaining joint flexibility
- Safe physical activity
- Appropriate positioning
- Mobility aids when required
- Prevention and management of contractures
Safe Play and Energy Conservation
Overusing muscles without adequate rest accelerates muscle damage.
High-impact or strenuous activities—such as stair climbing, sit-ups, weight training, and jumping in bouncy houses or trampolines—should be avoided.
Heart and Lung Monitoring
DMD can also affect the heart and breathing muscles over time, making regular monitoring an important part of care.
Cardiac Care
Annual evaluations, including ECG and echocardiogram, should begin at diagnosis.
Protective heart failure medications are typically initiated around age 10.
Pulmonary Care
Annual breathing tests, including Forced Vital Capacity (FVC), begin around age 5–6 to establish baselines.
Lung volume recruitment and assisted coughing are introduced if lung capacity decreases.
School Accommodations
Working with your child's school can help ensure that appropriate support is provided.
Parents can work with the school to establish an Individualized Education Program (IEP).
Recommended accommodations include:
- A chest-high desk with proper foot and back support
- Extra time and frequent rest breaks every 15–20 minutes during extended or timed tasks
- Exemption from standard physical education in favour of stretching, coaching roles, or lap timing
Why Does DMD Need a Multidisciplinary Team?
DMD is much more than a muscle disorder.
Children benefit from coordinated care involving multiple specialists. Depending on the child's needs, the team may include:
- Pediatric neurologist/neuromuscular specialist
- Physiotherapist
- Occupational therapist
- Cardiologist
- Pulmonologist/respiratory specialist
- Orthopaedic specialist
- Endocrinologist
- Dietitian
- Genetic counsellor
- Psychologist/neuropsychologist
- Pediatrician
Regular monitoring allows potential complications to be identified and managed before they become severe.
Current DMD care recommendations emphasise coordinated multidisciplinary care across different stages of the condition.
When Should Parents Seek Medical Advice?
Parents should speak to a pediatrician or appropriate specialist if they notice signs such as:
- Delayed walking
- Frequent falls
- Difficulty running, climbing stairs or jumping
- Difficulty getting up from the floor
- Waddling while walking
- Toe walking
- Difficulty keeping up with other children
- Noticeably enlarged-looking calf muscles
- Weakness that gradually becomes more apparent
Early medical evaluation can help families understand whether these signs require further assessment.
Key Takeaway
DMD is a challenging journey, but early diagnosis, regular medical care, and supportive therapies with a multidisciplinary team can make a huge difference.
Parents play a central role in spotting early signs, advocating for care, and nurturing their child’s independence and happiness.